No. I don't think it is "official". Looks like a JW made their own video out of stock footage. They may have noticed that stock footage and music was used for a good portion of the last "convention video" in 2016.

It has a splendid answer too. The witnesses will be shocked to discover that yes, they will be there, among the very great crowd of everybody else. That has always been the plan. We have much to learn on the way there.